ledgemoor wrote:I'm skeptical. Soy is a staple not just in Japan, but across Asia. I am not familiar enough with the Japanese culture to know if they consume primarily fermented soy or not. But I am familiar with the Chinese culture and others over there. Unfermented tofu is the norm.
My understanding is that Japanese eat fermented soy. In China, you are correct, they eat unfermented tofu, but they sit down to eat tofu. It's on a dish and they know they are eating soy; they can see it and say "there's the soy, right there on my plate." The difference is that in N. America we put soy meal, soy flour, soy yada yada all throughout our processed/packaged foods. It's an expander, a filler, a cheap "food" thingee that you don't know you are eating. It's in your breakfast, lunch, dinner and snacks. Why? It's really, really cheap! More profits. With soy (and corn) Big Food makes "food product." This is different than "food." I can't document it, but I think you might find that N. Americans eat way more soy than Chinese in China.
ledgemoor wrote: It isn't all what we eat. Part of the problem is no doubt the war on masculinity. Doing masculine things increases testosterone. Modern society discourages boys from doing masculine things.
Yes, I agree. I've been studying the effects of masculine society, masculine teams and comraderie and especially rivalry and a "fighting" setting, upon the level of testosterone in men. Where men are either threatened or competing their T levels jump higher; higher in prison, higher on football teams, higher among soldiers at war. Where there is no conflict, less competition, less struggle, T levels drop. You can even pump up your T levels by assuming a stance of feet wide, arms raised, fists clenched, and do a 'threatening male ape display" while grunting aggressively for 2 minutes. This works for males and females by the way.
If you've ever done power-lifting at the gym you'll know that there is a "Psych up, pump up" routine you go through just before going for "the big lift."
Job29Man wrote:Meaning, male T has dropped 50% since the 1950s
ledgemoor wrote: More like 60 years. Yes, our testosterone has decreased, but not that much.
NIH abstract of study of generational decline in male Testosterone level, concludes that the decline is "substantial."
Personally I think there's a "perfect storm" of T diminishing factors in the past 30 years; feminized society that punishes masculine behavior, all manner of food additives (not just soy), estrogen drugs that are not fully filtered out of the water supply, sedentary lifestyles, porn addiction, and environmental pollutants (in the air, water, food, even radiation from microwaves etc).
No question in my mind that the young men I observe today, are not the same as the same aged young men I observed 40 and 50 years ago.